Drilling machine



Sept. l5, 1925. 1,553,897

G. H. GLAsER l MILLING mourut:

Filed Feb. 15; 1921 IW/vena?.- Geogge-H. GZasen 1y MMM Patented sept. 15, 1925.

PATEN T oFF-1 ce.

yefEt'mGE n.. GLASEE, 'orf w'1'NTHaoi MASSACHUSETTS, -AssIGNoR rro GEORGE H.L

' t Q Vcxrmvmrrpor BELMONT, rerAssAcHUsEm'rs- DRILLING MACHINE. e

Appiiction' siafrebrtteiyis; 1921. serial No; 445,208.-

To'a'll 'whom vtffmay ycdrwtmt: 'A

Be it known' that LfGEoRGE l a citizen 'of the United States,fanda resident: of lWinthrop, county' of Suffolk, State' of l\/[assachusetts,*have invented'van Im# provenientlfin Drilling Machines, of which, Vthe" following? description-, in connection n with the! accompanying drawii'igs, isa speci- -`fica-tion, like' charz'tcters'y on the-F drawings representing' like parts;

My' invention? relatesto and lpa-rticularly *butnotlf exclusively to 'a hammerdrill I'Jrovidedw'vithy a feed cylinder and f'pistonfor; feeding--itto the work. Y

inventionfwill befbest understood from the accompanying' drawing andthe *followe ing vdescription ofwafspecitic embodiment;

thereof 'submitted forfillustrative `purposes While-fits? scopel will be' yfmore particularly pointed out in the appended claims.

In" the drawings; Figure l shows anelevation of the sub-` mitted embodimentof myinvention, partsl beingfshown broken' away-,and other parts inlongitudinal section; A

Fig.'2 fis a transversesection of` the controlling* plyi'ng` the'v feed Vcylinder and'v Figs. 3, 4, 'and respectively'illustratev the controlling' positions-of the feed cylinder throttle and/itsy associated cam, Figs; 3 and 5 respectively' ybeing 'sections on the lilies '3 3 and'j-' of Fig. 1 and Figs.A 4 an'd respectively representingsections on the l'inesB-#S' and 5;-5ofFignA 1 with the part-s moved'to another operating position."

In general, the submitted embodiment ofI myf'invention includes a drillingtool, a hammer for' moving the? tool longitudinally', a fmotor Vformovingit'angulafrly land a feed cylinderfandpistonfor'moving it up to thevvork. I t

Referring. to

with fit.:y lFor. actuating fthe' drill steel" I provide `a .hammer t 4 kwhich iimparts percus- H. GnAsER,

drilling machines c vvalve in the plane; ofthe 'port sup-f the drawings, thef hollow c drill steel -1 is provided with 'a polygonal shank 2`for insertion in the` chuck 3, which forv this kpurpose is provided ywith fa shank' receiving socket of cross-Section-fsimilar to' of the mechanism for causingthe chuck to rota-te are not claimed in this" application, thek same will' Ynot be described except in so far -asfnecessary lto' show how they are ape plied "to" or cooperatewiththe invention claimed.

y TheV fdrill 'steel' formed-*with a bore for conducting cleansing' fluid to the drill-v -ing `poi-ntfand for supplyingisuch ybore I provide the usual watertube'SS having at its rear end the flange' 39. c

`The hammer has a rearward extension 7 sion or-hammer barS. Motive fluid is supplied to the hammerthrough a passage 9 whence'it 'finds yits 'way through the passages l0 'to' maintain 'a Vconstant lpressure at the rear end of the bore receiving theextension 7. From thisbore lead the intake" passages 'I'O of reduced diameter andy a forward exten# 1-1 (only tone-offwhich isshown) for `the rotary engine. Y Tlieexhaust for the'hammer is'indicated bythe passage 12,'while they rotary engine'is exhausted by any suitably positioned passages to the atmosphere. It

` willv be noted by this arrangement thatv when- -ever the" passage `-9 is supplied withV motive fluid,` both thehammer andA rotary engine willl'be supplied.'

'The toolV actuatorformed by .the mechanism"for 'imparting rotative and percussive action lto the tool i includes a casingformed f' of suitable sections comprising thevend secs tion' 4"orf head block "13A which provides a closure yfor 'the casing.

heldtogether vby suitably arranged side These sections are bolts`14e' and arranged in parallelism .with Y theA casing is the `feed vc ylin'd'erl which is Aprovidedvvith'perforated ears '16 through l `which the" sidebolts pass to hold the casing l'and kcylinder in assembledrelation Fo'rconvenienceof manufacture the end section'l is provided with an kopening 17,

too

Vwhich carries Ithe 'portion 11S' forming 'thejL rear headof the lhammer cylindenl EX- teriorly of the casing I Vprovide, a'nipple 19 21 carried by the feed cylinder and is provided with a passage 22 in communication with the feed cylinder admission and exhaust passage 23. Angula'rly disposed in the section 13 with relation to the passage 22 and as illustrated 180 degrees from the passage 22, is a passage 24, and placing these passages in communication is the annular recess or passage 25 formed on the exterior of the member 18.

The feed cylinder is provided with the front head 26 and slidably mounted in the cylinder is a piston 27 carrying the rod 28, which, as will be understood by those skilled in the art, is adapted to engage a suitable support or abutment. The passage 23 hereinbefore referred. to communicates with the space between the piston and head 26 through a port 29. For controlling the admission andexhaust of motive fluid to and from the port 29 I provide a valve 30 having an operating handle 31 and carried by the portion ofthe end section 13 opposite the nipple. `This valve is of the turning v plug type and is supplied with motive fluid through a passage 32 which in aV manner Y hereinafter described `is in constant communication with the source of motive fluid.

As illustrated by Figs. l, 3 and 4, the valve is provided with a longitudinal passage 33 and a port 34 placing the passage in communication with the exterior lateral surface of the valve. Inl the same plane as the port 34, the valve is cut away to form an arcualexterior groove 35 and placing the groove in communication with the atmosphere is the passage 36 extending through the wall of the portion of the casing section forming the valve cage. Vhen the valve is in the position illustrated by Fig. 3, the passages 32 andv24 are placed in communication for supplying motive fluid through the port 29 to force the piston 27 outwardly relatively to the feed cylinder and with the valve in the position illustrated by Fig. 4, the passage 24 is placed in communication withk the atmosphere through the valve groove 35 and passage 36 to exhaust the feed cylinder and permit the feed piston to move inwardly relatively to the feed cylinder.

The rear cylinder head portion 18 is provided "with a rearwardly opening socket 40 and closing the socket is al plug 41 which carries the swivelled waterhose connection 42. The water tube is inserted through an opening 43 in the bottom of the socket and is of such `length that the flange 39 of the water tube is spaced from such bottom. Surrounding the portion of the tube in the socket is a packing 44 of rubber or like material. Interposed between the plug 41 and i' the packing is a valve block 45k provided with an axial passage 46 and a transverse passage 47,` 'The passage k47 preferably is cylindrical in cross-section and reciprocably mounted therein is a cylindrical piston valve 48 provided with the reduced diameter portion 49, which in the position of parts shown by Fig. l acts to establish communication between the water supply connection and the water tube through the passage 46 of the block. When the valve is moved to its lowermost position as viewed in Fig. 1, the reduced diameter portion of the valve will be moved out of register with the passage 46 and the supply of water will be interrupted. To provide a watertight joint between the plug and the valve block I provide the forward face of the plug with a recess carrying the rpacking 50, which surrounds the end of the passage 51 leading through the plug to the valve block.

For operating the valve 48 I provide the valve 30 with the recessed portion 52, the bottom of which forms a cam surface 53. Providing a cam -follower for the cam surface is a pin 54 which as illustrated by Fig. 1 abuts the cam surface at one end and at its opposite end the adjacent end surface of the valve 48. For holding the cam, the pin and the valve in operative relation I pro- `vide a spring 55 located in the bore 47 of the valve block 45 beneath the valve as viewed in Fig. 1. As shown the cam surface is so related to the port 34 of the valve that when the valve is in the position of' parts illustrated by Fig. 3 and the motive fluid is supplied the feed cylinder, the cam and its follower are in the position illustrated by Fig. 5 and water is supplied the bit. Vhen the valve is in the position of Fig. 4, vunder which condition the feed cylinder is vented to the atmosphere, the cam and its follower are in the position illustrated by Fig. 6 in which case the supply of water to the feed is interrupted.

For controlling the passage 9 supplying motive fluid to the parts actuating the drill steel I have shown a control valve 56 having a live air passage' 57 in communication with the exterior of the valve through a port 58 adapted to be moved in and out of communication with the passages 9 and 12. The passage 32 leading to the feed valve 30 communicates with the seat for the valve 56 through a port 59, and establishing communication between this port and the live air passage 57 is an angularly extended passage 60 so formed that in all positions of the valve 56 the live air passage 57 will be in communication with the passage 32. The live air passage 57 of the valve may be Aplaced in' communication with the air hose 1n any suitable manner of which the art pre.-

sents numerous examples.

Although I have described for purposes of illustration one specic embodiment of my inventioruit is to be understood that my invention is .notxlifmited to the .details of this iii embodiment and that extensivedeviations -may be made therefrom without departing -having a rearwardly opening socket, a

cleansingrfluid tube extending axially into said piston and opening into said socket, a

packing for said tube, a block for compressingsaid packing, a member carrying a ycleansing fluid supply yconnection rscrewthreaded into the end of said socket, a passageextending through said member and.

block for conducting cleansing fluid to said tube, `a lvalve chamber in'said block, a valve in saidy chamber, said valve moving transversely to said passage for controlling said passage, a throttle valve for controlling the motive fluid for said machine, and a cam actuated by said throttle valve for moving said first mentioned valve.

2. In an air operated drilling machine, a

casing, a closure for said casing'having a rearwardly open socket, a cleasing fluid tube carried by said closure and opening into said socket, a cleansing fluid supply connection carried by said socket and openinginto said socket, a valve for controlling the cleansing fluid supply located in said socket, a valve at the side of saidcasing for control- -ling the air supply, and a cam operated by the last mentioned valve for actuating the first mentioned valve.

3. In an air Voperated drilling machine, a casing, a closure for said casing having a rearwardly opening socket, a cleansing fluid tube having its rear end in said socket, a plug closing said socket and carrying a cleansing kfluid connection, a block located in said socket forwardly of said plug and having a valve chamber carrying a valvev for' controlling the cleansing fluid, said valve being mounted for reciprocation transversely of said socket, a rotary valve at the side of said casing for controlling the air supply, said rotary valve having its axis parallel to said tube, and a cam carried by said rotary valve for actuating said first .named valve. c l

4. In a drilling machine,'a casing, a closure therefor having a rearwardly opening socket, a cleansing fluid tube carried by said closure and opening into said socket, a cleansing fluid supply connection carried by said socket and opening into said socket, a valve for controlling the cleansing fluid supply located in said socket forwardly'of said connection, and means located exteriorly of the casing for operating said valve. A

5. In a drilling machine, a casing, a closure therefor having a rearwardly opening socket, a cleansing fluid tube carried by said closure and opening into said socket, a cleansing fluid supply connection carried by said socket and opening linto said socket, a valve for controlling the cleansing fluid supply located in said socket forwardly of said connection, means including a rotary cam for moving said valve, said cam being located exteriorly of said socket, and means for `moving said valve.

v6. In a drillingmachinda casing, a closure therefor having a rearwardly opening socket, a cleansing fluid tube carried by said closure and opening into said socket, a cleansing fluid supply connection carried by said socket and opening into said socket, a7

valve forcontrolling the cleansingA fluid supply located in saidrsocket forwardly of said connection, a passage in said closurey forconducting motive fluid for opening said machine, a separate valve for ysaid passages, cam means for causing the first mentioned valve to be moved by motion of the last mentioned valve, and a handle located eXteriorly of said casing for operating said last mentioned valve.

7 In a drilling machine, a casing, a closure therefor having a rearwardly opening socket, a. cleansing fluid tube having its rear end in said socket, a plug closing said socket and carrying a cleansing fluid connection, a block located in said socket forwardly of said plug and having a valve chamber carrying a valve for controlling the cleansing fluid.

8. In a drilling machine, a casing, a closure therefor having a rearwardly opening socket, a cleansing fluid tube having its rear end in said socket, 'a packing member for said tube in said socket, `a block in said socket located rearwardly of said packing and abutting the same, a cleansing fluid controlling valve carried by said block, a plug closing said socket and abutting the block, a cleansing fluid connection carried by said plug, and means of forcing said plug into said socketfor compressing said packing.

9. In `a drilling machine, a casing, a closure therefor having a rearwardly opening socket, a cleansing fluid tube having its rear endin said socket, a packing member for said tube in said socket, la block in said socket located rearwardly of said packing and abutting the same, a cleansing fluid controlling valve carried by said block, a plug closing said opening and abutting thev block, a cleansing fluid connection opening intoI said socket, and means of forcing said plug into said socket for compressing said packing. .y

10. In a drilling machine, a tool, its actuator comprising a casing, a feed cylinder, said feed cylinder and casing being in side by side relation, an air supply for said feed cylinder comprising a conduit at one side of said casing, a cleansing fluid supply including a valve located `Within said casing and substantially axially thereof7 an angularly disposed passage in said casing for conducting air from said air vsupply Connection around said valve to the opposite side of said casing, and a passage connecting said angularly disposed passage With said feed cylinder.

11. In a drilling machine7 a tool, its actuator comprising a casing, a rearward casing section having a cylindrical opening, a meinber inserted in said cylindrical opening and having a surface conforming to the surface of said cylindrical opening, a recess in one of said surfaces forming an arcuate passage, a Cleansing fluid control valve carried interiorly of said member, a feed cylinder,

at the side of said casing, a passage connecting said arcuate passage with said feed cylinder, and a motive fluid supply passage connected to said arcuate passage.

l2. In a rock drill, a hammer piston, a casing therefor having a head-block at its rearward end, a drill steel carried by said casing, a tube mounted in said head-block for conducting cleansing fluid to said drill steel, a reciprocatory valve Within said head-block and being positioned rearwardly of said tube and transversely thereto7 a'valve at the side of said casing, and means causing operation of said last named Valve to operate the first named. valve.

In testimony whereof, I have signed my naine to this specification.

GEORGE H. GLASER.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,558,897, granted September l5, 1925, upon the application of George H. Glaser, of Winthrop, Massachusetts, for

an improvement in Drilling Machines, an error appears in the printed specification requiring correction as follows: Page 3, line 84, claim 6, Jfor the Word opening read operating; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent OHice.

Signed and sealed this 27th day of October, A. D. 1925.

[SEAL] KARL FENNING,

Acting Oowwzzssz'oner of Patents. 

